TRIANGLE WAVE GENERATOR CIRCUIT WITH NOISE REDUCTION
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United States of America
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Issued Date -
Feb 6, 2025
app pub date -
Jul 10, 2024
filing date -
Jul 10, 2024
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Abstract
Described herein is a triangle wave generator circuit for use with a class D amplifier, the triangle wave generator circuit adapted to generate and output a triangle wave signal and comprising: a clock generating circuit adapted to provide a timing signal that generates a period of the output triangle wave; a first current source adapted to provide a first source current at a first magnitude; a first current sink adapted to sink a first sink current at about two times the first magnitude; a DC servo circuit adapted to adjust the first magnitude of the first source current based on a direct current (DC) voltage present in the output triangle wave signal so that the DC voltage on the output triangle wave signal is substantially eliminated; and an output filter circuit adapted to substantially reduce audio frequency noise in the output triangle wave, and generate the output triangle wave signal at a desired peak-to-peak voltage level based on the first source current and first sink current.
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